// record_store_test_validate.h

/**
 *    Copyright (C) 2014 MongoDB Inc.
 *
 *    This program is free software: you can redistribute it and/or  modify
 *    it under the terms of the GNU Affero General Public License, version 3,
 *    as published by the Free Software Foundation.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Affero General Public License for more details.
 *
 *    You should have received a copy of the GNU Affero General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the GNU Affero General Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */

#pragma once

#include "mongo/db/storage/record_data.h"
#include "mongo/db/storage/record_store.h"
#include "mongo/db/storage/record_store_test_harness.h"
#include "mongo/unittest/unittest.h"

using std::set;
using std::string;
using std::stringstream;

namespace mongo {
namespace {

    class ValidateAdaptorSpy : public ValidateAdaptor {
    public:
        ValidateAdaptorSpy() { }

        ValidateAdaptorSpy( const set<string> &remain )
            : _remain( remain ) {
        }

        ~ValidateAdaptorSpy() { }

        Status validate( const RecordData &recordData, size_t *dataSize ) {
            string s( recordData.data() );
            ASSERT( 1 == _remain.erase( s ) );

            *dataSize = recordData.size();
            return Status::OK();
        }

        bool allValidated() { return _remain.empty(); }

    private:
        set<string> _remain; // initially contains all inserted records
    };

    class ValidateTest : public mongo::unittest::Test {
    public:
        ValidateTest()
            : _harnessHelper( newHarnessHelper() ),
              _rs( _harnessHelper->newNonCappedRecordStore() ) {
        }

        OperationContext* newOperationContext() {
            return _harnessHelper->newOperationContext();
        }

        const RecordStore& getRecordStore() { return *_rs; }

        const set<string>& getInsertedRecords() { return _remain; }

        void setUp() {
            {
                scoped_ptr<OperationContext> opCtx( newOperationContext() );
                ASSERT_EQUALS( 0, _rs->numRecords( opCtx.get() ) );
            }

            int nToInsert = 10;
            for ( int i = 0; i < nToInsert; i++ ) {
                scoped_ptr<OperationContext> opCtx( newOperationContext() );
                {
                    stringstream ss;
                    ss << "record " << i;
                    string data = ss.str();
                    ASSERT( _remain.insert( data ).second );

                    WriteUnitOfWork uow( opCtx.get() );
                    StatusWith<DiskLoc> res = _rs->insertRecord( opCtx.get(),
                                                                 data.c_str(),
                                                                 data.size() + 1,
                                                                 false );
                    ASSERT_OK( res.getStatus() );
                    uow.commit();
                }
            }

            {
                scoped_ptr<OperationContext> opCtx( newOperationContext() );
                ASSERT_EQUALS( nToInsert, _rs->numRecords( opCtx.get() ) );
            }
        }

    private:
        scoped_ptr<HarnessHelper> _harnessHelper;
        scoped_ptr<RecordStore> _rs;
        set<string> _remain;
    };

} // namespace
} // namespace mongo
